

Waterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13
Key item features
- Powerful Performance: Features a 4HP motor and dual-speed design for superior water flow and efficient operation in spa systems.
- Durable Construction: Built with a 56-frame construction and Viton seals for extended lifespan and enhanced durability.
- Optimized Efficiency: Incorporates a large 2.5-inch intake for improved circulation and a split capacitor for minimum energy consumption.
- Flexible Installation: Designed with a rotatable wet end, allowing for versatile installation options.
- Quiet Operation: Equipped with double-shielded ball bearings for smooth and quiet performance.
- Cooler Running: The 56-frame construction contributes to a cooler operating temperature, extending motor life.
Specs
- Fountain, pond & pool pump typeAbove-Ground Pool Pump
- BrandWaterway
- Horsepower4 HP
- Volts240 V
- Pump operating phaseDual Speed
- Inlet diameter2 in
- Free shipping
Free 30-day returns
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Compare with similar items
| Product | Viewing this itemWaterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13 ![]() $511.19 current price $511.1963.8 out of 5 Stars. 6 reviews | Pump, Waterway Power Defender PD-110, 1.1hp,115/230v,1-Spd ![]() $520.95 current price $520.9525 out of 5 Stars. 2 reviews | Waterway 3722021-1D 2Speed 5HP 230V Spa/Hot Tub Pump ![]() $388.32 current price $388.3263 out of 5 Stars. 6 reviews | Waterway 3410030-1E Iron Might 1/15HP Single-Speed Circulating Spa Pump 48-Frame 115V ![]() $268.10 current price $268.1045 out of 5 Stars. 4 reviews | Waterway Executive 56-Frame 3HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2in. Discharge, 230V 3721221-13 ![]() $339.50 current price $339.5034.3 out of 5 Stars. 3 reviews | Waterway Executive 56 Frame Spa Pump 3 HP 230V 3721221-1D ![]() $342.99 current price $342.99 | Waterway Viper 56-Frame 5HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2-1/2in. Discharge, 230V 3722021-1V ![]() $641.89 current price $641.89 | KFFKFF Dual Speed SPA Pump, 56-Frame, AC 220-240V Hot Tub SPA Pump, 4HP/210GPM/65.61ft High Speed or 0.7HP/103GPM/16.07ft Low Speed, 2" Port 90° Rotational Interface, UL Standards ![]() $259.99 current price $259.9915 out of 5 Stars. 1 reviews | Waterway 3711621-1D 4HP 230V 1-Speed 56 Frame Executive Pump ![]() $354.76 current price $354.7623 out of 5 Stars. 2 reviews |
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| Fountain, pond & pool pump type | Above-Ground Pool PumpWaterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13 | In-Ground Pool PumpPump, Waterway Power Defender PD-110, 1.1hp,115/230v,1-Spd | -Waterway 3722021-1D 2Speed 5HP 230V Spa/Hot Tub Pump | Submersible Pond PumpWaterway 3410030-1E Iron Might 1/15HP Single-Speed Circulating Spa Pump 48-Frame 115V | -Waterway Executive 56-Frame 3HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2in. Discharge, 230V 3721221-13 | Pool PumpsWaterway Executive 56 Frame Spa Pump 3 HP 230V 3721221-1D | -Waterway Viper 56-Frame 5HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2-1/2in. Discharge, 230V 3722021-1V | -KFFKFF Dual Speed SPA Pump, 56-Frame, AC 220-240V Hot Tub SPA Pump, 4HP/210GPM/65.61ft High Speed or 0.7HP/103GPM/16.07ft Low Speed, 2" Port 90° Rotational Interface, UL Standards | Pool PumpsWaterway 3711621-1D 4HP 230V 1-Speed 56 Frame Executive Pump |
|---|---|---|---|---|---|---|---|---|---|
| Horsepower | 4 HPWaterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13 | 1.1 HPPump, Waterway Power Defender PD-110, 1.1hp,115/230v,1-Spd | 5 HPWaterway 3722021-1D 2Speed 5HP 230V Spa/Hot Tub Pump | 15 HPWaterway 3410030-1E Iron Might 1/15HP Single-Speed Circulating Spa Pump 48-Frame 115V | 3 HPWaterway Executive 56-Frame 3HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2in. Discharge, 230V 3721221-13 | 3 HPWaterway Executive 56 Frame Spa Pump 3 HP 230V 3721221-1D | 5 HPWaterway Viper 56-Frame 5HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2-1/2in. Discharge, 230V 3722021-1V | 4.0 HPKFFKFF Dual Speed SPA Pump, 56-Frame, AC 220-240V Hot Tub SPA Pump, 4HP/210GPM/65.61ft High Speed or 0.7HP/103GPM/16.07ft Low Speed, 2" Port 90° Rotational Interface, UL Standards | 4 HPWaterway 3711621-1D 4HP 230V 1-Speed 56 Frame Executive Pump |
| Volts | 240 VWaterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13 | 115230 VPump, Waterway Power Defender PD-110, 1.1hp,115/230v,1-Spd | 230 VWaterway 3722021-1D 2Speed 5HP 230V Spa/Hot Tub Pump | 115 VWaterway 3410030-1E Iron Might 1/15HP Single-Speed Circulating Spa Pump 48-Frame 115V | -Waterway Executive 56-Frame 3HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2in. Discharge, 230V 3721221-13 | 230 VWaterway Executive 56 Frame Spa Pump 3 HP 230V 3721221-1D | 230 VWaterway Viper 56-Frame 5HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2-1/2in. Discharge, 230V 3722021-1V | 240 VKFFKFF Dual Speed SPA Pump, 56-Frame, AC 220-240V Hot Tub SPA Pump, 4HP/210GPM/65.61ft High Speed or 0.7HP/103GPM/16.07ft Low Speed, 2" Port 90° Rotational Interface, UL Standards | -Waterway 3711621-1D 4HP 230V 1-Speed 56 Frame Executive Pump |
| Pump operating phase | Dual SpeedWaterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13 | Single SpeedPump, Waterway Power Defender PD-110, 1.1hp,115/230v,1-Spd | Dual SpeedWaterway 3722021-1D 2Speed 5HP 230V Spa/Hot Tub Pump | Single SpeedWaterway 3410030-1E Iron Might 1/15HP Single-Speed Circulating Spa Pump 48-Frame 115V | Dual SpeedWaterway Executive 56-Frame 3HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2in. Discharge, 230V 3721221-13 | Dual SpeedWaterway Executive 56 Frame Spa Pump 3 HP 230V 3721221-1D | Dual SpeedWaterway Viper 56-Frame 5HP Dual-Speed Spa Pump, 2-1/2in. Intake, 2-1/2in. Discharge, 230V 3722021-1V | Dual SpeedKFFKFF Dual Speed SPA Pump, 56-Frame, AC 220-240V Hot Tub SPA Pump, 4HP/210GPM/65.61ft High Speed or 0.7HP/103GPM/16.07ft Low Speed, 2" Port 90° Rotational Interface, UL Standards | Single SpeedWaterway 3711621-1D 4HP 230V 1-Speed 56 Frame Executive Pump |
About this item
Product details
- Waterway Executive 56 Frame Spa Pump 4 HP 230V 3721621-13
-
Upgrade your spa system with the Waterway Executive 56-Frame 4HP Dual-Speed Spa Pump, engineered for maximum performance, durability, and energy efficiency. Featuring a powerful 4HP motor, a dual-speed design, and 56-frame construction, this spa pump ensures superior water flow while maintaining a cooler operating temperature for an extended lifespan.
The Executive wet end is designed for optimal efficiency, featuring a large 2.5” intake for enhanced circulation and Viton seals for long-lasting durability. Its rotatable wet end allows for flexible installation, while double-shielded ball bearings provide smooth, quiet operation.
Whether you're enjoying a relaxing soak or an invigorating jet massage, this high-performance pump keeps your spa running efficiently and reliably.
- By unknown
Specifications
Fountain, pond & pool pump type
Brand
Horsepower
Volts
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-3 of 6 reviews
Verified Purchase
Easy to install
Easy hookup. Seems to be of good quality so far for the money. Working as should for my hot tub. Not disappointed in it at all. Glad it was available and easy to install. Heavy though. I saved lots of money replacing the pump on my own. All electrical wires were assembled, so I just needed to plug it into the main panel. I am highly satisfied with this pump.
Verified Purchase
Nice pump and fast shipping
Verified Purchase
Worked great, as expected









